Weighted Pareto chart

You may weight the counts by assigning attributes, such as cost, severity, or detectability, to the defects. A weighted Pareto chart will help you identify situations where high cost defects occur infrequently. A weighted Pareto chart may not point to the same errors or problems that a Pareto chart based on frequency does.

The weighted Pareto chart below uses the same clothing data described in the main Pareto topic, except that the defects have been weighted by multiplying the cost per defect type by the number of defect type. Here, you can see that stitching errors now account for 30.5% of the total defect costs. Missing buttons, which accounted for 45.2% of the defects in the unweighted Pareto chart, now account for only 5.3% of the total defect costs.